Rolling door or shutter and means for operating the same.



No. 812,722. PATENTED. TiaB, 1's-, 196

J. GAHILL. ROLLING-DOOR 0R SHUTTER AND MEANS FOR OPERATING THE SAME.

AP PLIOATION FILED MAY 29, 1905.

3v SHEETS-SHEET 1.

llVl/E/VTOR J HNCAl-l U.

ATTORNEYS" No. 8l2,722. PATENTED FEB. 13, 1906.

J. CAHILL.

ROLLING DOOR OR SHUTTER AND MEANS-FOR OPERATING THE SAME.

APPLICATION FILED MAY 29, 1905.

ssfinms mnm.

WIITNESSES: v I/Vl/E/VTOI? JOHN CAHILLYI [WM ATTORNEYS No. 812,722. PATENTED FEB.13,1906.

J. 'GAHILL. v

ROLLING DOOR 0R SHUTTER AND MEANS FOR OPERATINGTHE ,SAME.

' APBLIIOATIOVN I'ILBD MAY 29, 1905.

s sHmTs sHBBT VIII I Illlli" WITNESSES. l/Vl/E/VTOR JOHN CAI-"LL ATTORNEYS detail sectional view of the spiral cam, shaft,

from the top; but this construction is op'ento' space at the top of the doorway usually 2 isv an end view of shaft, showing gear. for

' enough tension being put on theanchors-to tom bar to hold the spring-anchors, said bottom bar necessarily decreasing'the size of T PATENT OFFICE.

JOHN CAHILL, or NORFOLK, VIRGINIA.

ROLLING DOOR OR SHUTTER AND MEANS FOR OPERATING THE SAME.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed May 29, 1905. Serial No. 262,825.

To all whom it may concern:

Be it known that I, J OHN CAHILL, a citizen of the United States, residing at Norfolk, in the county of Norfolk and State of Virginia, have invented a new and useful Improvement in Rolling I oors or Shutters and Means for Operating the Same, of which the following is a specification.

My invention relates to improvements in what are known as rolling doors or shutters. and means for operating them, its main object being to provide a rolling door or shutter which shall be simple in construction and noiseless in operation.

Another object is to close the opening orcaused by the unwinding of the door or shutter.'

Another object is to provide improved means for operating the door or shutter.

With these and other objects in view my inventionconsists of certain novel features of construction, arrangement, and combination of parts, as will be hereinafter fully described, and pointed out in the claims, reference being had to the accompanying drawings, in Which Figure 1 is a front elevation, partly in section, of the door-operating mechanism. Fig.

turning same. Fig. 3 is a sectional end View showing door or curtain rolled up and the e ualizing-spring. Fig. 4 is a sectional view of door, showing wicket raised. Fig. 5-is a sectional end elevation showing the door closed and the equalizing-spring. Fig. 6 is a and bracket. Fig. 7 is a sectional elevation of the spiral cam and the cone-pulley. I

The usual method of constructing wooden rolling doors, shutters, or partitions is by mortising a number of slats and stringing them tightly on metal bands. Another Way,- is to fasten the metal bands'to springranchor's that are fastened to a wide bottom bar;

hold the slats tightly together lwhenfl'hung'- the objection that atmospheric changes (particularly when thedoor or shutter is used as an outdoor appliance) causeswelling-of-the slats, putting extra tensionon' the springs, and rendering operation of the door or shutter difficult, besides having to use a very large botof a screw that the door or shutter can be coiled on said pulleys.

door or shutter opening. To overcome these objections, I have ,devised the various im provements, which I shall now proceed to describe. v, i j 1 represents a door or shutter composed of slats 2, mortised and strung on metal bands 3, which are secured in the bottom bar 4 by the pins or anchors 5. The wooden slats are threaded on the bands until the door or shut ter opening is filled. Then an iron slat. 6 is put.

on to keep the wooden slats tightly together.

Then enough more wooden slats are put onand another iron slat 6 to further keep the slats together and the iron slats to balance one another. A reasonable space 7 is then left to allow for atmospheric expansion of the wooden slats between top iron slat and the top bar, so that in wet weather the woodenslats will expand and not cause the extra pull on the bands. When the wooden slats shrink in dry weather, the iron slatswill by their weight keep the wooden slats together.

the brackets 9, which support the shaft 10.

. 11 represents rollers which fit around the shaft and run on bearings in brackets 9, which are elongated.

. 12 represents barrels or pulleys fastened by set-screws to the shaft 10. Tothese barrels or pulleys the top bar 6* is secured by means passing through the bands 3 3, so

His ayariable balance or cone-shaped drum having a threaded circumference, said drum being rigidly secured to one end of the shaft 10. Q

- 14 is awire rope secured at one end to the cone-shaped drum and at its other end to a coiled spring 1 5, housed in a tube or casing 16,

' .rigidly'secured at its lower end to the casting 1f7,which is secured to the floor or a suitable base, said casting- 1 7 having the openings 18 to allow accessv to a turnbuckle. 19,.Which is ,at-

'-tache d at its-upper end to the lower end ofthe spring-15, andat its lower end to casting '17. "The object of" the cone? shaped drum and spring is to 'keepthe power strong enough to raise. the door or shutter when-the spring :is

8 represents the wall, to which are secured too discharging. The casing 16 is secured at its Y 22 22par'eiwliat- I'term spiral cains, secured on bothends of-shaft 10, thepitch of .upperend tothebracket' a plate 20. I f .21- 21 are 'guides for the door or shutter and are secured to the wal-lby bolts-or other.su'it- .abl'e means. Iro

55 five inches wide.

- of the door or shutter is kept at the same distance from the wall at all points of its operation. In Fig. 6 the position of the cam 22, roller 23, and shaft with respect to the bracket 9 when thedoor or shutter is one-' half opened or raised is shown.

On the extreme right-hand end of shaft 10 is suspended a bracket or hanger 25, substantially s uare in shape, as shown in Fig. 2. To the shaft 10 at this end is keyed a pinion or gear-wheel 26,which meshes with a smaller pinion or gear wheel 27, attached to a sprocket-wheel 28, which is mounted on a small shaft 29, secured in the hanger 25. Said hanger is open at the bottom to permit the closed bymy device.

passage of sprocket chain 30, which passes over sprocket-wheel 28 to turn shaft 10, and thus operate the door or shutter, the chain being guided by a chain-guard 31.

r 32 represents rollers mounted on the inner face of the hanger to prevent said hanger from tipping up when the door or shutter is operated.

36 is awicket-door constructed in the same manner as the main door or shutter and may be hung from its to or side, but preferably a from its top, part 0 the bottom bar 4 of the main door being cut away, the bottom bar 33 of the small door or wicket taking its place. This wicket is rabbeted all around to make a good joint, and 34 is a hasp-bolt, which fastens the wicket-door. The advantage of hanging the wicket-door from its top is that iij'W'Ill close of its own weight, and there will be no danger of its opening and being broken when the main door or shutter is being. rolled The opening which usually exists in the use of ordinary rolling doors or shutters between the shaft and the wall when unrolled is 1 door or shutter has five coils and the slats are one inch thick then the openin would be By the use of the spiral cams of niy invention, the spirals of which are of the same pitch as the thickness of the i slats during the operation of'the shutter or door, said, shutter or door is automatically kept the proper distance from the wall and absolutely leaves no opening, as the position of shaft 10 on the brackets is controlled by I the spiral cams 22 and the rollers 23. This construction also keeps the coil directly over v ground, it acts as a support and a brace to the Ordinarily if the the guideways, which greatlyreduces friction,

and the coils of the door are balanced by the iron slats 6 and 6 when the door or shutter is rolled up, as indicated in Fig. 3.

The spring 15 is an expansion-spring, and the cone-shaped drum 13 is sufficiently small at one end and varies in diameter as to cause the sprin in the present instance to travel at a ratio s igh-tly less than one to two. It will be noted'that when the spring 15 is contracted it reaches nearlyone-half way up the casing, so that the door or shutter will have to o up or down twice as fast as the s ring will contract or expand. The tension 0 said spring is kept even or uniform by means of the variation of the diameters on the drum 13. As the barrels or pulleys around which the shutter or door coils are about twice the size or diameter of the drum 13, it will be seen that the shutter or door will coil or uncoil twice as fast as the spring will contract or expand.

The top bar or slat 6*, as has been'stated, is secured to the pulleys 12, and, as shown, these pulleys have a portion of their periphery cut out eccentrically, so that the outer face of bar or slat 6 will be substantially flush with the uncut portion of said pulleys.

As the casing 16 is secured to the floor or bracket 9. i

'As the coil of the shutter or door when it rolls up is at its largest diameter, I put stronger straps or bands 35 in the wicketdoor, so that it will be stiffer than the .rest of the shutter or door.

What I claim is 1. A verticallydisposed flexible door or shutter consisting of a series of horizontal wooden slats and interposed heavy metallic slats loosely threaded on tapes, whereby a tight joint between the slats below the metallic slats will be at all times maintained.

2. A vertically-disposed flexible shutter or door consisting of a series of wooden slats, a heavy metallic slat mounted on top of said wooden slats, a smaller series of wooden slats mounted on top of the aforesaid metallic slat,

another heavy metallic slat surmounting the last-mentioned metallic slat, and a top bar, allthreade'd'on ta es, the wooden and me-' tallic slats bein lbosely threaded thereon and the said topiar and tapes adapted to besecured to a rotary shaft. I

3.. In a device of the class described, a flexi- I ble door or shutter adapted to close anopening in 'a wall, ashaft to which said door or shutter is secured,'supports for said shaft,

and means for causing the shaft to 'move transversely toward the wall as the door or shutter uncoils, and away from thewall asit is coiled. 5 I

4. In a device of the class described, a flexible door or shutter adaptedgto close an-opening in a wall, ashaft to which the upper end shutter 'is secured, supports I for, said shaft, spiral cams rigidly s cured to-said shaft adjaand away from the wall as it is coiled and means attached to; one end of the shaft for causing rotation of thesame. v

5. In a device of the class described, fiflXl door ter adapted to close'an i ing' in a wall, a shaft, to Whichjsaid door 'or shutter is secured, supports 'for saidshaft, cams mounted on said shaft, adjacent to its supports and cooperating. means on said-sup:

port for engaging said cams to cause the shaft to movetransversely'with respect to, its su ports, away from the Wall-when the flexih e door is coiled andtoward the Wall as it is uncoiled. r v 6. "In a device of the class described, a flexible door or'shutter adapted to close an 'open ing ina wall, a shaft. to which said door'or cent to its supports, and projections on said sup' orts engaging the spiral cams and -coop-.

era .ng therewith to cause the shaft to move transversely with respect to its supports, away from the wall as the door or' shutter is coiled and toward the wallas it is'uncoiled.

. 7.. In adevice of the class described, a fleXi blc door or shutter adapted to close an opening in a wall, a shaft to which said door or shutter is secured, supports for said shaft, a spirally-grooved cone-pulley secured to one end of said shaft, an expansion-spring anchored'at one end and a flexible connection between the cone-pulley and the free end of the expansion-spring, the shaftzto revolve and move transversely on its supports, toward the wall as the door or shutter uncoils, and away from the wall as it is coiled.

8. In a device of the class described, afleXi ble door or shutter, a shaft to which said door or shutter is secured, supports or. brackets for said shaft, a spirally-grooved conepulley secured to one end of said shaft, 'an expansionspring suitably anchored at one end, a flexib e connection between the conepulley and the free end of the expansionspring, and means for regulating the tension I of the spring. 7

9. In adevice of the class described,-at1eXi-.

bl-e door or shutter adapted to close an opening-iiija wall, a sh'aftrotatably mounted in .sultable supports, drums rigidly secured to 5 5 said shaft,- said door or shutter rigidly se-' curedfat-its-upperend to said drums, and qmeansfor causing the shaft torotateand move transversely onits' supports, away from the wall ass'aid door or shutter is coiled oo and toward the wall as it is uncoiled.

10. In a device of the class described, a

zfiexi'ble door' or shutter consisting offa series of slats threaded on tapes, and a top bar secured to the upper ends of the ;ta es, leavingi a space between the main bod o the door or shutter and its top bar, a sha -t towhichsaid top bar is rigidl secured, supports or brack- /ets. for's'aid sha 't, said shaft being 'rotatably mounted-in said supports, and adapted to 7c move transversely in said supports when the door or shutter is coiled and uncoiled.

.-11. In .a device of the class described,. a

flexible door or shutter, a shaft, supports or brackets for said shaft, drums rigidly secured 7 5 to said shaft, said door or shutter rigidly secured at its upperend to the said drums, spiral-groove cams secured to said shaft adjacent-to said supports or brackets, projections on said supports or brackets engaging the spiral-groove cams, a spirally-threaded cone-pulley secured to one end of said shaft, an expansion-spring vertically disposeda'nd suitably anchored at its lower end, a flexible connection secured atone end to the up er end of the expansionspring and at it's 0t er end to the spirally-grooved cone-pulley, and means for rotating said shaft, whereby the said shaft will be caused to rotate and move transversely in its supports or brackets, when 6 

